
public class zy02 {
	public static void main(String[] args){
		char[] a={'a','b','c','D','E','F'	};
		for(int i=0;i<a.length;i++){
			if(Character.isLowerCase(a[i])){
				a[i]=Character.toUpperCase(a[i]);
			}
			else if(Character.isUpperCase(a[i])){
				a[i]=Character.toUpperCase(a[i]);
			}
			}
		for(int i=0;i<a.length;i++){
			System.out.printf("%6c",a[i]);
		}
		}

}
